Why do people see ghosts?

For Halloween, we explore ghost sightings - how to explain them, what research says and if there's an ethical imperative to acknowledge them.

See What Might Be Civil War-Era Ghosts Caught on Camera at Gettysburg

The 5 Different Types of Ghosts (with pictures) - Louisville Tours

Here's why so many people still believe in ghosts

Ever felt a ghostly presence? Now we know why

How Literary Ghosts Can Help Us All Be a Little More Human ‹ Literary Hub

Teen snaps selfie with a photobombing ghost in Georgia - ABC7 Chicago

Experts reveal the five hidden reasons why people think they SEE ghosts - and they prove the apparitions aren't real

Why do people see ghosts?

Why Are There So Many Female Ghosts? - Atlas Obscura

Can Dogs See Ghosts? – American Kennel Club

Why do people see ghosts?

Why do people see ghosts?

I see dead people': why so many of us believe in ghosts

The REAL reasons why some people see ghosts, according to experts